<template>
    <div id="box">
        <el-upload class="avatar-uploader" :action="$url+'/uploadAvatar'" :show-file-list="false"
        :data="data"
            :on-success="handleAvatarSuccess" :before-upload="beforeAvatarUpload">
            <img v-if="imageUrl" :src="imageUrl" class="avatar">
            <i v-else class="el-icon-plus avatar-uploader-icon"></i>
        </el-upload>
    </div>
</template>
<script>
    export default {
        data() {
      return {
        imageUrl: '',
        data:{
            userId:this.$store.getters.getId
        }
      };
    },
    methods: {
      handleAvatarSuccess(res, file) {
        this.$message.success('上传成功！')
        this.imageUrl = URL.createObjectURL(file.raw);
        this.$emit('handleSuc')
      },
      beforeAvatarUpload(file) {
        const isJPG = file.type === 'image/jpeg';
        const isLt2M = file.size / 1024 / 1024 < 2;

        if (!isJPG) {
          this.$message.error('上传头像图片只能是 JPG 格式!');
        }
        if (!isLt2M) {
          this.$message.error('上传头像图片大小不能超过 2MB!');
        }
        return isJPG && isLt2M;
      }
    }
  }
    
</script>
<style lang='less' scoped>
    #box{
        display: flex;
        justify-content: center;
    }
.avatar-uploader .el-upload {
    border: 1px dashed whitesmoke;
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
  }
  .avatar-uploader .el-upload:hover {
    border-color: #409EFF;
  }
  .avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 178px;
    height: 178px;
    line-height: 178px;
    text-align: center;
  }
  .avatar {
    width: 178px;
    height: 178px;
    display: block;
  }
</style>